The hot-spot trails formed by volcanic island chains indicate the positions of tectonic plates as for back as the present ocean basins have existed.后半句 as for back as the present ocean basins have existed 是什么意思？
...__ and got to the top of the mountain in the
end. A. both B. each other C. one another D. him该书p.100所给的答案与提示是：选B。The two 表示他们两个，each other
指两者之间的“相互”；one another通常指三者以上之间的“相互”。 笔者认为, 根据以下...
Each new model is designed to relieve its owner of one more source of
spiritual exercise or one more obstacle to fun.请问老师one more在这里是什么用法，one和more分别做什么成分？to fun的to是介词吗？
...s grandmother had wanted to write a children’s book for many years, but one thing or another always got in the way. 简的祖母多年来一直想写一本儿童读物，但是一件接一件的事情总是妨碍她写书。请问句中的 one thing or another 是什么意思？上面的句子将...
one out of ten, one out of five, one in ten, one in every twenty, one in a hundred等这类东西作主语时，谓语动词是与one保持一致用单数？还是跟后面一个较大的数字保持一致用复数？比如：One in ten children in the village ______ no chance to go to school.A. hav...